So I'm looking for a comic I read when I was a kid. I remember that it was about an astronaut who somehow got himself in another dimension (or traveled back in time). I don't remember a lot of details. He woke up in a mental hospital that he escaped from. He met someone who showed him the sky trough the telescope, and he saw that the stars were these small shining spheres hanging from he sky. There was an issue with torn sky that he went to investigate. I know this is all very vague. I was a kid and didn't really understood what I was reading.